You're just being argumentative. There's nothing you can predict that isn't built upon some assumptions. "When I flip this light switch, the lights will go on

You're just being argumentative. There's nothing you can predict that isn't built upon some assumptions. "When I flip this light switch, the lights will go on like they have the last 10,000 times I did so." Is a prediction built upon assumptions that power is still running, that the light bulb hasn't burnt out, and that physics will continue working the way it has up to this point. You need to consider the strength of the assumptions in order to evaluate the predictions. If you consider those assumptions to not be fairly solid... whatever. But just handwaving that because "we are talking about opinions and assumptions" somehow gives your disbelief credibility worth exploring is a non-starter.